Unix时间戳转日期格式Java unix时间转换为时间戳

转载

数据分析大师 2024-05-15 09:06:10

文章标签 Unix时间戳转日期格式Java 前端时间戳 timestrap 数据处理 文章分类 Java 后端开发

前言

提示：这里可以添加本文要记录的大概内容：

某时区用户A，系统运行发生异常，产生告警记录，通知相关负责人某时区B,并告知触发时间T_a，但是由于A所在时区和B所在时区不同，A告知的触发时间为A时区的时间，如果B要查询这条记录的话，就得先把A时区的时间T_a，转成的B时区对应的时间，才能查询到当前的记录。不方便快速的定位问题，故此，在系统，添加时区选项，可以切换任意时区，进行数据查询。

这里我们的处理方式是，有前端添加一个时区的选项，用户选择时区，并且选择具体时间之后，前端将时间数据处理成时间戳，传递给后端。

提示：以下是本篇文章正文内容，下面案例可供参考

一、时间戳是什么？

时间戳就是Unix时间戳(Unix timestamp)，定义为从格林威治时间1970年01月01日00时00分00秒起至现在的总秒数，不考虑闰秒。

时间戳是不会跟着时区的改变而改变，所以不管你在哪个时区，时间戳都是一致的。

二、时区数据处理

时区选择框的默认选项为当前时区

Unix时间戳转日期格式Java unix时间转换为时间戳_Unix时间戳转日期格式Java

new Date().getTimezoneOffset()/60  //获取当前时区

<div class="layout-start light-select item">
    <label style="width: 56px">时区选择</label>
    <el-select
    v-model="filter.time_zone"
   	class="m-2"
    placeholder="默认选中北京时区"
    style="width: 200px">
      <el-option
       v-for="item in options_time_zone"
       :key="item.value"
       :label="item.label"
       :value="item.value" />
     </el-select>
 </div>

const options_time_zone = [{
    label: "零时区(UTC)--7.5°W~7.5°E",
    value: 0,
  },{
    label: "东一区(UTC+1)--7.5°E~22.5°E",
    value: +1,
  },{
    label: "东二区(UTC+2)--22.5°E~37.5°E",
    value: +2,
  },{
    label: "东三区(UTC+3)--37.5°E~52.5°E",
    value: +3,
  },{
    label: "东四区(UTC+4)--52.5°E~67.5°E",
    value: +4,
  },{
    label: "东四五(UTC+5)--67.5°E~82.5°E",
    value: +5,
  },{
    label: "东六区(UTC+6)--82.5°E~97.5°E",
    value: +6,
  },{
    label: "东七区(UTC+7)--97.5°E~112.5°E",
    value: +7,
  },{
    label: "东八区(UTC+8)--112.5°E~127.5°E",
    value: +8,
  },{
    label: "东九区(UTC+9)--127.5°E~142.5°E",
    value: +9,
  },{
    label: "东十区(UTC+10)--142.5°E~157.5°E",
    value: +10,
  },{
    label: "东十一区(UTC+11)--157.5°E~172.5°E",
    value: +11,
  },{
    label: "东十二区(UTC+12)--172.5°E~172.5°W",
    value: 12,
  },{
    label: "西十二区(UTC-12)--172.5°E~172.5°W",
    value: -12,
  },{
    label: "西十一区(UTC-11)--172.5°W~157.5°W",
    value: -11,
  },{
    label: "西十区(UTC-10)--157.5°W~142.5°W",
    value: -10,
  },{
    label: "西九区(UTC-9)--142.5°W~127.5°W",
    value: -9,
  },{
    label: "西八区(UTC-8)--127.5°W~112.5°W",
    value: -8,
  },{
    label: "西七区(UTC-7)--112.5°W~97.5°W",
    value: -7,
  },{
    label: "西六区(UTC-6)--97.5°W~82.5°W",
    value: -6,
  },{
    label: "西五区(UTC-5)--82.5°W~67.5°W",
    value: -5,
  },{
    label: "西四区(UTC-4)--67.5°W~52.5°W",
    value: -4,
  },{
    label: "西三区(UTC-3)--52.5°W~37.5°W",
    value: -3,
  },{
    label: "西二区(UTC-2)--37.5°W~22.5°W",
    value: -2,
  },{
    label: "西一区(UTC-1)--22.5°W~7.5°W",
    value: -1,
}];

import moment from 'moment';
	filter.start_time = moment(time[0]).unix();
    filter.end_time = moment(time[1]).unix();

    var begin_timestamp = filter.start_time
    var end_timestamp = filter.end_time;
    let diff = 0;
    let local_zone = -new Date().getTimezoneOffset()/60;
    //都是东区
    if(local_zone > 0 && filter.time_zone > 0 && local_zone > filter.time_zone) {
        diff = (local_zone - filter.time_zone);
        begin_timestamp = begin_timestamp + diff * 60 * 60;
        end_timestamp = end_timestamp + diff * 60 * 60;
    } else if(local_zone > 0 && filter.time_zone > 0 && local_zone < filter.time_zone) {
        diff = (filter.time_zone - local_zone);
        begin_timestamp = begin_timestamp - diff * 60 * 60;
        end_timestamp = end_timestamp - diff * 60 * 60;
    //都是西区 
    } else if(local_zone < 0 && filter.time_zone < 0 && local_zone > filter.time_zone) {
        diff = (local_zone - filter.time_zone);
        begin_timestamp = begin_timestamp + diff * 60 * 60;
        end_timestamp = end_timestamp + diff * 60 * 60;
    } else if(local_zone < 0 && filter.time_zone < 0 && local_zone < filter.time_zone){
        diff = (filter.time_zone - local_zone);
        begin_timestamp = begin_timestamp - diff * 60 * 60;
        end_timestamp = end_timestamp - diff * 60 * 60;
    // 西区  ==> 东区
    } else if(local_zone < 0 && filter.time_zone > 0) {
        diff = filter.time_zone - local_zone;
        begin_timestamp = begin_timestamp - diff * 60 * 60;
        end_timestamp = end_timestamp - diff * 60 * 60;
    // 东区  ==> 西区
    } else if(local_zone > 0 && filter.time_zone < 0) {
        diff = local_zone - filter.time_zone;
        begin_timestamp = begin_timestamp + diff * 60 * 60;
        end_timestamp = end_timestamp + diff * 60 * 60;
    } else if(local_zone == 0 && filter.time_zone > 0){
        diff = filter.time_zone;
        begin_timestamp = begin_timestamp - diff * 60 * 60;
        end_timestamp = end_timestamp - diff * 60 * 60;
    } else if(local_zone == 0 && filter.time_zone < 0) {
        diff = - filter.time_zone;
        begin_timestamp = begin_timestamp + diff * 60 * 60;
        end_timestamp = end_timestamp + diff * 60 * 60;
    }